KIRKPATRICK, District Judge.
This case at first involved the validity and infringement of a group of six patents having to do with the production of lead powder for use in making storage battery plates. They will be referred to by their abbreviated numbers. We are now directly concerned with the validity and infringement of one of them (1,548,149) and, incidentally, with the scope of another (1,548,150). These two patents issued on the same day, May 11, 1926. '150...
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